EP3592477B1 - Mixer comprising cleaning nozzle - Google Patents

Mixer comprising cleaning nozzle Download PDF

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Publication number
EP3592477B1
EP3592477B1 EP18708980.0A EP18708980A EP3592477B1 EP 3592477 B1 EP3592477 B1 EP 3592477B1 EP 18708980 A EP18708980 A EP 18708980A EP 3592477 B1 EP3592477 B1 EP 3592477B1
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EP
European Patent Office
Prior art keywords
cleaning
closure cover
outlet opening
mixer
nozzles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18708980.0A
Other languages
German (de)
French (fr)
Other versions
EP3592477A1 (en
Inventor
Clemens Schmitt
Martin Dörr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
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Publication date
Application filed by Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority to PL18708980T priority Critical patent/PL3592477T3/en
Publication of EP3592477A1 publication Critical patent/EP3592477A1/en
Application granted granted Critical
Publication of EP3592477B1 publication Critical patent/EP3592477B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
    • B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
    • B01F35/451—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by rotating them about an axis parallel to the plane of the opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/751—Discharging by opening a gate, e.g. using discharge paddles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients

Definitions

  • the present invention relates to a mixer with a mixing container having an outlet opening and a closure lid which is positioned between a closed position in which the closure lid closes the outlet opening and an open position in which the closure lid releases the outlet opening so that mixed material from the mixing container over the outlet opening can be removed, can be moved back and forth.
  • the mixer has at least one cleaning nozzle for cleaning the outlet opening and / or a mixture outlet arranged outside the mixing container, and a liquid supply for supplying cleaning liquid to the at least one cleaning nozzle.
  • the present disclosure relates to a method for cleaning an outlet area and / or a mixed material outlet of a mixer with an outlet opening and a closure cover that can be moved relative to the outlet opening.
  • Such a mixer with an outlet opening is used, for example, for the preparation of concrete and is from the DE 2903951 C3 known.
  • the processing of fresh concrete for the production of concrete goods aims to create a homogeneous mixture with a desired / preselectable consistency from the raw materials used, such as sand, gravel, cement and water, and finally to make the ready-made fresh concrete available for further component manufacture put.
  • the corresponding mixing container has an outlet opening into which the closure cover can be moved in order to close the mixing container in a dust-tight, liquid-tight and, if necessary, vacuum-tight manner.
  • the cover is generally pivotably connected to the machine frame of the mixer on a pivot axis. Particularly preferably, the pivoting movement takes place essentially in a circular manner about a horizontally or essentially horizontally arranged pivot axis.
  • the outlet opening is arranged on the underside of the mixing container, so that when the closure lid is opened, the material to be mixed flows directly out of the outlet opening via the closure lid into the material to be mixed outlet.
  • FIG. 1 a representation of such a mixer of the prior art is shown schematically.
  • the known mixer 1 has a mixing container 2 with an outlet opening 3 in which a closure cover 4 is arranged.
  • the closure cover 4 has a swivel arm 5 with which it can be rotated about a swivel axis 6 and thus moved out of the outlet opening 3 and back into it.
  • the mixing container 2 can be rotated about the vertically arranged axis of rotation 7.
  • Corresponding bearings 8 are provided for this.
  • the axis of rotation 7 can also be arranged inclined relative to the vertical.
  • a mixed material outlet 9 is shown below the mixing container 2.
  • the material to be mixed in the mixing container 2 can be removed by pivoting the closure cover 4 out of the outlet opening 3 with the aid of the pivot arm 5 about the pivot axis 6.
  • the mix in the mixing container 2 will then automatically fall out of the outlet opening 3 due to the force of gravity or flow out of the outlet opening supported by the rotary movement of the mixing container and thereby pass through the mix outlet. It cannot be avoided that the walls of the mix spout and the cover, including its edge surfaces, are soiled by the mix. This can lead to an accumulation of mixed material residues which, on the one hand, prevent the closure cover 4 from being guided into the outlet opening 3 in a dust, liquid or vacuum-tight manner. They also reduce caking on the walls of the mixed material outlet, the cross-sectional area available for the removal of the mixed material or obstruct the outflow of the following mixed material.
  • cleaning nozzles 10 in the mixed material outlet 9, which can be supplied with cleaning liquid via a liquid supply 11 in order to clean the interior of the mixed material outlet, as well as the swivel arm and the cover in the closed, opened or partially opened state with cleaning liquid.
  • the arrangement of the cleaning nozzles is very complex, especially since each cleaning nozzle must have a corresponding supply channel for supplying cleaning fluid.
  • the spray jet shapes of the individual cleaning nozzles always cover only a small area of the mixture outlet, so that a correspondingly large number of cleaning nozzles must be provided over the height and circumference of the mixture outlet in order to encircle the entire mixture outlet 9, the swivel arm 5 and the cover 4 as possible to clean completely.
  • the mixed material also flows over the cleaning nozzles and can stick there, the cleaning nozzles become soiled and, associated with this, malfunctions, so that the openings of the cleaning nozzles themselves have to be cleaned regularly.
  • Mixers with mixing containers are known, for example, from US 8,839,810 B1 , the WO 03/099472 A1 , as well as the DE 20 2013 100 812 U1 which document discloses a mixer according to the preamble of claim 1.
  • this object is achieved by a mixer according to claim 1. Because the closure cover can be pivoted, this automatically leads to the corresponding cleaning nozzle being pivotable, so that a comparatively large area of the mixed material outlet can be cleaned with a single cleaning nozzle.
  • the closure cover has a swivel arm which is rotatably mounted about a swivel axis.
  • the cleaning nozzle can be attached to the swivel arm. It is essential that a movement of the cleaning nozzle is caused by the movement of the closure cover or its swivel arm. If the pivot axis is aligned horizontally, a back and forth movement of the closure cover causes the cleaning nozzle to move on a circular path.
  • the cleaning nozzle is particularly preferably arranged at the end of the pivot arm facing away from the pivot axis.
  • the liquid supply runs through the pivot axis about which the closure cover can be pivoted.
  • the liquid supply to the nozzles on the swivel arm can be carried out in a fixed manner, e.g. by means of piping.
  • the liquid supply can be arranged in a stationary manner in the machine frame, so that a flexible transfer to the nozzles or the swivel arm, for example by means of hoses, is necessary.
  • a plurality of cleaning nozzles is provided which are fastened to the closure cover, the cleaning nozzles preferably being designed in such a way that they show an expanding spray jet shape during operation.
  • the plurality of cleaning nozzles together produce a partially annular or annular spray jet shape.
  • the individual cleaning nozzles can be arranged in such a way that they are arranged at the same distance from a center point.
  • the cleaning nozzles can be arranged on an imaginary ring so that they generate an annular or partially annular spray jet around the center point during operation.
  • the spray nozzles are preferably aligned at one or more angles with respect to the central axis of the closure cover in such a way that, taking into account the spray jet angle when the cleaning nozzles are pivoted, both the outlet opening and the mix outlet are as complete as possible, preferably over the entire area and over the entire height into the existing corners of the mixture outlet into it, is detected by at least one spray jet.
  • the nozzles are arranged underneath, i.e. on the side of the closure cap facing away from the outlet opening, in such a way that they are never overflowed by the mixture during emptying or come into contact with the mixture during emptying.
  • the mixer has a rotatable mixing container.
  • the inside of the outlet opening can then also be cleaned when the mix outlet is closed or almost closed. Since the Outlet opening is firmly connected to the rotating container, almost complete cleaning of the outlet opening over the entire circumference is achieved by spraying a fixed point or a limited area in the area of the outlet opening in connection with the rotary movement of the mixing container.
  • At least one cleaning nozzle is aligned in the direction of the swivel arm and / or the swivel shaft in order to effectively remove any mixed material residues that may be located there.
  • Figure 1 shows a schematic representation of a mixer of the prior art, which has already been described in detail above.
  • FIG. 2 shows a schematic representation of a first embodiment of the invention.
  • the same reference numbers have been used for the same elements.
  • the swivel arm 5 has a distributor 12 on which a plurality of cleaning nozzles 13 are arranged.
  • the distributor 12 has a circular cross section and has a plurality of openings closed by cleaning nozzles 13 on its circumferential outer edge.
  • the liquid is supplied via the line 15, which extends through the pivot axis 6. With the line 15, the distributor 12 and thus all of the cleaning nozzles 13 arranged on it can also Cleaning fluid are supplied.
  • the spray jets that can be generated by the cleaning nozzles 13 are indicated by way of example with the dash-dotted lines.
  • a further cleaning nozzle 14, which is supplied with cleaning fluid via the line 16 which is connected to the distributor 12, is arranged in such a way that it is directed at the pivot arm 5 or the pivot axis 6.
  • Figure 2 shows the embodiment according to the invention with the closure cover closed, ie the closure cover is in the closed position.
  • the closure cover 4 can be pivoted about the pivot axis 6 and between the in Figure 2 closed position shown and in the in Figure 3 open position shown can be moved back and forth.
  • the back and forth movement not only moves the closure cover 4 from the closed position to the open position, but also moves the cleaning nozzles arranged on the closure cover or on the swivel arm 5 back and forth, whereby the Spray jets indicated by lines paint over a large area of the mix spout and clean it.
  • FIG 4 is an illustration of a mixer not encompassed by the invention. This differs from that in the Figures 2 and 3 embodiment shown only by an alternative liquid supply 15 '.
  • the liquid supply 15 ' runs in the case of FIG Figure 4
  • the embodiment shown is no longer through the pivot axis 6, but is connected to the machine frame by a stationary line 17. This has the consequence that the line 15 ′ must be designed to be flexible, since the swivel arm 5 moves relative to the stationary line 17.
  • additional fixed nozzles can be arranged in the surrounding wall in the mix outlet 9, for example to clean the outer edge and surface of the closure cover 4 or the sides of the pivot arm 5 during the pivoting movement.
  • the nozzles do not necessarily have to be arranged in a ring, but can also be arranged, for example, on a hemispherical distributor, in several rings, freely rotating or distributed in any other form. Furthermore, the nozzles do not have to be fixedly connected to the swivel arm or the closure cover, but could also be fastened to a holder that is additionally kinematically movable about one or more spatial axes. The nozzles themselves can produce a constant spray pattern or a rotating or pulsating spray pattern.
  • each nozzle or a plurality of nozzle groups could have separate liquid feeds and these could achieve a predetermined spray pattern via a control system by alternately opening and closing the liquid feeds.
  • the mixer To clean the outlet area, the mixer is first completely emptied. During the emptying process, it is not necessary and often also undesirable to add cleaning liquid. Only after the mixer has been completely emptied and the material to be mixed has been removed from the discharge area are the nozzles activated in order to effect cleaning. During the cleaning cycle, the closure can be opened and closed several times or it can only be swiveled over partial areas with particularly heavy soiling. Since the mixed material does not come into contact evenly with the discharge area during the emptying process and does not get dirty, a targeted cleaning effect can be achieved in this way.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Accessories For Mixers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)

Description

Die vorliegende Erfindung betrifft einen Mischer mit einem eine Auslassöffnung aufweisenden Mischbehälter und einem Verschlussdeckel, welcher zwischen einer geschlossenen Position, in welcher der Verschlussdeckel die Auslassöffnung verschließt, und einer geöffneten Position, in welcher der Verschlussdeckel die Auslassöffnung freigibt, so dass Mischgut aus dem Mischbehälter über die Auslassöffnung entnommen werden kann, hin und her bewegt werden kann.The present invention relates to a mixer with a mixing container having an outlet opening and a closure lid which is positioned between a closed position in which the closure lid closes the outlet opening and an open position in which the closure lid releases the outlet opening so that mixed material from the mixing container over the outlet opening can be removed, can be moved back and forth.

Der Mischer weist zumindest eine Reinigungsdüse, zur Reinigung der Auslassöffnung und/oder einem außerhalb des Mischbehälters angeordneten Mischgutauslaufs, und eine Flüssigkeitszufuhr zur Zufuhr von Reinigungsflüssigkeit zu der zumindest einen Reinigungsdüse auf.The mixer has at least one cleaning nozzle for cleaning the outlet opening and / or a mixture outlet arranged outside the mixing container, and a liquid supply for supplying cleaning liquid to the at least one cleaning nozzle.

Des Weiteren betrifft die vorliegende Offenbarung ein Verfahren zum Reinigen eines Austrittsbereichs und/oder eines Mischgutauslaufs eines Mischers mit einer Auslassöffnung und einem relativ zur Auslassöffnung bewegbaren Verschlussdeckel.Furthermore, the present disclosure relates to a method for cleaning an outlet area and / or a mixed material outlet of a mixer with an outlet opening and a closure cover that can be moved relative to the outlet opening.

Ein solcher Mischer mit Auslassöffnung wird beispielsweise zur Aufbereitung von Beton verwendet und ist aus der DE 2903951 C3 bekannt. Die Aufbereitung von Frischbeton für die Herstellung von Betonwaren hat das Ziel, aus den eingesetzten Rohstoffen wie bspw. Sand, Kies, Zement und Wasser eine homogene Mischung mit einer gewünschten/vorwählbaren Konsistenz einzustellen und schließlich den fertig aufbereiteten Frischbeton für die weitere Bauteilherstellung zur Verfügung zu stellen.Such a mixer with an outlet opening is used, for example, for the preparation of concrete and is from the DE 2903951 C3 known. The processing of fresh concrete for the production of concrete goods aims to create a homogeneous mixture with a desired / preselectable consistency from the raw materials used, such as sand, gravel, cement and water, and finally to make the ready-made fresh concrete available for further component manufacture put.

Durch die Verwendung von Wasser in der Mischung werden besondere Anforderungen an die Dichtigkeit der Auslassöffnung gestellt, da bei verschlossenem Mischbehälter die zugegebene Flüssigkeit nicht unkontrolliert aus dem Verschlussbereich in den Mischgutauslauf übertreten darf, da es sonst zu einer Veränderung der Mischgutkonsistenz aufgrund gestörtem Flüssigkeitsanteil in der Mischung kommt.The use of water in the mixture places special demands on the tightness of the outlet opening, since when the mixing container is closed, the added liquid must not pass uncontrollably from the closure area into the mix outlet, as otherwise the consistency of the mix will change due to a disturbed proportion of liquid in the mix comes.

Gleichzeitig führt die Verwendung von aushärtenden Stoffen wie Zement zu mit der Zeit festen, nicht abspülbaren Verkrustungen auf dem Verschlussdeckel, der Auslassöffnung sowie im Mischgutauslauf, die zu fortschreitenden Problemen bei der Dichtigkeit des Verschlusses und der Entleerung der Maschine führen können.At the same time, the use of hardening materials such as cement leads to solid, non-flushable incrustations on the cover, the outlet opening and in the mix outlet over time, which can lead to progressive problems with the tightness of the closure and the emptying of the machine.

Sollen Betone mit besonders niedrigem Luftporengehalt hergestellt werden, so kann dies mit Hilfe der Vakuumaufbereitung erfolgen. Voraussetzung für die Durchführung des Verfahrens ist es jedoch, dass der Mischbehälter dann zusätzlich vakuumdicht verschlossen werden kann. Um die Vakuumdichtigkeit im Dauerbetrieb sicherstellen zu können, ist eine besonders gute Reinigung des Mischerverschlusses, insbesondere der den Verschlussdeckel umfassenden Dichtung und des Auslaufbereiches notwendig.If concretes with a particularly low air void content are to be produced, this can be done with the aid of vacuum preparation. However, it is a prerequisite for carrying out the method that the mixing container can then also be closed in a vacuum-tight manner. In order to be able to ensure the vacuum tightness in continuous operation, a particularly good cleaning of the mixer closure, in particular the seal encompassing the closure cover and the outlet area is necessary.

Der entsprechende Mischbehälter weist eine Auslassöffnung auf, in der der Verschlussdeckel hineinbewegt werden kann, um den Mischbehälter staub-, flüssigkeits- und gegebenenfalls vakuumdicht zu verschließen. Dabei ist der Deckel im Allgemeinen schwenkbar an einer Schwenkachse mit dem Maschinenrahmen des Mischers verbunden. Besonders bevorzugt erfolgt die Schwenkbewegung im Wesentlichen kreisförmig um eine horizontal oder im Wesentlichen horizontal angeordnete Schwenkachse.The corresponding mixing container has an outlet opening into which the closure cover can be moved in order to close the mixing container in a dust-tight, liquid-tight and, if necessary, vacuum-tight manner. The cover is generally pivotably connected to the machine frame of the mixer on a pivot axis. Particularly preferably, the pivoting movement takes place essentially in a circular manner about a horizontally or essentially horizontally arranged pivot axis.

In der Regel ist die Auslassöffnung an der Unterseite des Mischbehälters angeordnet, so dass beim Öffnen des Verschlussdeckels das Mischgut unmittelbar aus der Auslassöffnung über den Verschlussdeckel in den Mischgutauslauf strömt.As a rule, the outlet opening is arranged on the underside of the mixing container, so that when the closure lid is opened, the material to be mixed flows directly out of the outlet opening via the closure lid into the material to be mixed outlet.

In Figur 1 ist schematisch eine Darstellung eines solchen Mischers des Standes der Technik gezeigt. Der bekannte Mischer 1 weist einen Mischbehälter 2 mit einer Auslassöffnung 3 auf, in der ein Verschlussdeckel 4 angeordnet ist. Der Verschlussdeckel 4 weist einen Schwenkarm 5 auf, mit dem er um eine Schwenkachse 6 gedreht und damit aus der Auslassöffnung 3 heraus und wieder in diese hereinbewegt werden kann. In der dargestellten Ausführungsform ist der Mischbehälter 2 um die vertikal angeordnete Drehachse 7 drehbar. Dafür sind entsprechende Lager 8 vorgesehen. Alternativ dazu kann die Drehachse 7 auch gegenüber der Vertikalen geneigt angeordnet sein.In Figure 1 a representation of such a mixer of the prior art is shown schematically. The known mixer 1 has a mixing container 2 with an outlet opening 3 in which a closure cover 4 is arranged. The closure cover 4 has a swivel arm 5 with which it can be rotated about a swivel axis 6 and thus moved out of the outlet opening 3 and back into it. In the embodiment shown, the mixing container 2 can be rotated about the vertically arranged axis of rotation 7. Corresponding bearings 8 are provided for this. As an alternative to this, the axis of rotation 7 can also be arranged inclined relative to the vertical.

Unterhalb des Mischbehälters 2 ist ein Mischgutauslauf 9 dargestellt.A mixed material outlet 9 is shown below the mixing container 2.

Nachdem das sich im Mischbehälter 2 befindliche Mischgut entsprechend aufbereitet ist, kann das Mischgut entnommen werden, indem der Verschlussdeckel 4 aus der Auslassöffnung 3 mit Hilfe des Schwenkarms 5 um die Schwenkachse 6 herausgeschwenkt wird. Das sich im Mischbehälter 2 befindliche Mischgut wird dann aufgrund der Schwerkraft aus der Auslassöffnung 3 selbsttätig herausfallen bzw. durch die Drehbewegung des Mischbehälters unterstützt aus der Auslassöffnung herausströmen und dabei den Mischgutauslauf durchlaufen. Dabei ist es nicht zu vermeiden, dass die Wände des Mischgutauslaufes sowie der Verschlussdeckel einschließlich seiner Kantenflächen vom Mischgut verschmutzt wird. Es kann hier zu einer Ansammlung von Mischgutresten kommen, die zum einen verhindern, dass der Verschlussdeckel 4 staub, flüssigkeits- bzw. vakuumdicht in die Auslassöffnung 3 geführt werden kann. Zudem verringern die Anbackungen an den Wänden des Mischgutauslaufs die für die Entnahme des Mischguts zur Verfügung stehende Querschnittsfläche bzw. behindern die Abströmung des nachfolgenden Mischgutes.After the material to be mixed in the mixing container 2 has been appropriately prepared, the material to be mixed can be removed by pivoting the closure cover 4 out of the outlet opening 3 with the aid of the pivot arm 5 about the pivot axis 6. The mix in the mixing container 2 will then automatically fall out of the outlet opening 3 due to the force of gravity or flow out of the outlet opening supported by the rotary movement of the mixing container and thereby pass through the mix outlet. It cannot be avoided that the walls of the mix spout and the cover, including its edge surfaces, are soiled by the mix. This can lead to an accumulation of mixed material residues which, on the one hand, prevent the closure cover 4 from being guided into the outlet opening 3 in a dust, liquid or vacuum-tight manner. They also reduce caking on the walls of the mixed material outlet, the cross-sectional area available for the removal of the mixed material or obstruct the outflow of the following mixed material.

Es ist daher bereits üblich, im Mischgutauslauf 9 Reinigungsdüsen 10 anzuordnen, welche über eine Flüssigkeitszufuhr 11 mit Reinigungsflüssigkeit versorgt werden können, um das Innere des Mischgutauslaufs, sowie den Schwenkarm als auch den Verschlussdeckel im geschlossenen, geöffneten bzw. teilgeöffneten Zustand mit Reinigungsflüssigkeit zu reinigen.It is therefore already common practice to arrange cleaning nozzles 10 in the mixed material outlet 9, which can be supplied with cleaning liquid via a liquid supply 11 in order to clean the interior of the mixed material outlet, as well as the swivel arm and the cover in the closed, opened or partially opened state with cleaning liquid.

Die Anordnung der Reinigungsdüsen ist jedoch sehr aufwändig, zumal jede Reinigungsdüse einen entsprechenden Zufuhrkanal zur Zufuhr von Reinigungsflüssigkeit aufweisen muss. Zudem decken die Sprühstrahlformen der einzelnen Reinigungsdüsen immer nur einen kleinen Bereich des Mischgutauslaufes ab, so dass eine entsprechend große Anzahl von Reinigungsdüsen über die Höhe und den Umfang des Mischgutauslaufs vorgesehen werden muss, um den gesamten Mischgutauslauf 9, den Schwenkarm 5 und den Verschlussdeckel 4 möglichst vollständig zu reinigen. Da jedoch das Mischgut auch über die Reinigungsdüsen strömt und dort haften bleiben kann, kommt es zu Verschmutzungen der Reinigungsdüsen und damit verbunden zu Fehlfunktionen, so dass die Öffnungen der Reinigungsdüsen selbst regelmäßig gereinigt werden müssen.However, the arrangement of the cleaning nozzles is very complex, especially since each cleaning nozzle must have a corresponding supply channel for supplying cleaning fluid. In addition, the spray jet shapes of the individual cleaning nozzles always cover only a small area of the mixture outlet, so that a correspondingly large number of cleaning nozzles must be provided over the height and circumference of the mixture outlet in order to encircle the entire mixture outlet 9, the swivel arm 5 and the cover 4 as possible to clean completely. However, since the mixed material also flows over the cleaning nozzles and can stick there, the cleaning nozzles become soiled and, associated with this, malfunctions, so that the openings of the cleaning nozzles themselves have to be cleaned regularly.

Mischer mit Mischbehälter sind beispielsweise bekannt aus der US 8,839,810 B1 , der WO 03/099472 A1 , sowie der DE 20 2013 100 812 U1 , welches Dokument einen Mischer gemäß dem Oberbegriff des Anspruchs 1 offenbart.Mixers with mixing containers are known, for example, from US 8,839,810 B1 , the WO 03/099472 A1 , as well as the DE 20 2013 100 812 U1 which document discloses a mixer according to the preamble of claim 1.

Aufgabe der vorliegenden Erfindung ist es daher, einen Mischer und ein Verfahren anzugeben, mit dem eine kostengünstige, effektive und einfache sowie betriebssichere Reinigung des Mischgutauslaufs und der Verschlussöffnung erfolgen kann.It is therefore the object of the present invention to provide a mixer and a method with which an inexpensive, effective, simple and operationally reliable cleaning of the mixed material outlet and the closure opening can take place.

Erfindungsgemäß wird diese Aufgabe durch einen Mischer gemäß Anspruch 1 gelöst. Dadurch, dass der Verschlussdeckel verschwenkt werden kann, führt dies automatisch zu einer Verschwenkbarkeit der entsprechenden Reinigungsdüse, so dass mit einer einzigen Reinigungsdüse ein vergleichsweise großer Bereich des Mischgutauslaufs gereinigt werden kann.According to the invention, this object is achieved by a mixer according to claim 1. Because the closure cover can be pivoted, this automatically leads to the corresponding cleaning nozzle being pivotable, so that a comparatively large area of the mixed material outlet can be cleaned with a single cleaning nozzle.

Dabei weist der Verschlussdeckel einen Schwenkarm auf, der um eine Schwenkachse drehbar gelagert ist. Dabei kann die Reinigungsdüse am Schwenkarm befestigt werden. Wesentlich ist, dass durch die Bewegung des Verschlussdeckels bzw. seines Schwenkarms eine Bewegung der Reinigungsdüse verursacht wird. Ist die Schwenkachse horizontal ausgerichtet, so bewirkt eine Hin- und Herbewegung des Verschlussdeckels eine Bewegung der Reinigungsdüse auf einer Kreisbahn.The closure cover has a swivel arm which is rotatably mounted about a swivel axis. The cleaning nozzle can be attached to the swivel arm. It is essential that a movement of the cleaning nozzle is caused by the movement of the closure cover or its swivel arm. If the pivot axis is aligned horizontally, a back and forth movement of the closure cover causes the cleaning nozzle to move on a circular path.

Besonders bevorzugt ist die Reinigungsdüse an dem der Schwenkachse abgewandten Ende des Schwenkarms angeordnet.The cleaning nozzle is particularly preferably arranged at the end of the pivot arm facing away from the pivot axis.

Erfindungsgemäß verläuft die Flüssigkeitszufuhr durch die Schwenkachse, um den der Verschlussdeckel geschwenkt werden kann.According to the invention, the liquid supply runs through the pivot axis about which the closure cover can be pivoted.

Somit kann die Flüssigkeitszuführung an die Düsen auf dem Schwenkarm fest, z.B. mittels einer Verrohrung, ausgeführt werden. Alternativ kann die Flüssigkeitszuführung ortsfest im Maschinenrahmen angeordnet werden, so dass eine flexible Überleitung an die Düsen bzw. den Schwenkarm, beispielsweise mittels Schläuchen, notwendig ist.Thus, the liquid supply to the nozzles on the swivel arm can be carried out in a fixed manner, e.g. by means of piping. Alternatively, the liquid supply can be arranged in a stationary manner in the machine frame, so that a flexible transfer to the nozzles or the swivel arm, for example by means of hoses, is necessary.

In einer weiteren bevorzugten Ausführungsform ist eine Mehrzahl von Reinigungsdüsen vorgesehen, die am Verschlussdeckel befestigt sind, wobei die Reinigungsdüsen vorzugsweise derart ausgebildet sind, dass sie im Betrieb eine sich erweiternde Sprühstrahlform zeigen.In a further preferred embodiment, a plurality of cleaning nozzles is provided which are fastened to the closure cover, the cleaning nozzles preferably being designed in such a way that they show an expanding spray jet shape during operation.

Dabei ist es besonders bevorzugt, wenn die Mehrzahl von Reinigungsdüsen zusammen eine teilringförmige oder ringförmige Sprühstrahlform erzeugen. Beispielsweise können die einzelnen Reinigungsdüsen derart angeordnet sein, dass sie in gleichem Abstand von einem Mittelpunkt angeordnet sind. Mit anderen Worten können die Reinigungsdüsen auf einem gedachten Ring angeordnet sein, so dass sie im Betrieb einen um den Mittelpunkt herum ringförmigen oder teilringförmigen Sprühstrahl erzeugen.It is particularly preferred if the plurality of cleaning nozzles together produce a partially annular or annular spray jet shape. For example, the individual cleaning nozzles can be arranged in such a way that they are arranged at the same distance from a center point. In other words, the cleaning nozzles can be arranged on an imaginary ring so that they generate an annular or partially annular spray jet around the center point during operation.

Die Ausrichtung der Sprühdüsen erfolgt dabei bevorzugt unter einem oder mehreren Winkeln gegenüber der Mittelachse des Verschlussdeckels derart, dass unter Berücksichtigung des Sprühstrahlwinkels beim Verschwenken der Reinigungsdüsen sowohl die Auslassöffnung als auch der Mischgutauslauf möglichst vollständig, bevorzugt vollflächig und über die gesamte Höhe bis in die vorhandenen Ecken des Mischgutauslaufs hinein, von mindestens einem Sprühstrahl erfasst wird.The spray nozzles are preferably aligned at one or more angles with respect to the central axis of the closure cover in such a way that, taking into account the spray jet angle when the cleaning nozzles are pivoted, both the outlet opening and the mix outlet are as complete as possible, preferably over the entire area and over the entire height into the existing corners of the mixture outlet into it, is detected by at least one spray jet.

Weiterhin werden die Düsen unterhalb, d.h. auf der der Auslassöffnung abgewandten Seite des Verschlussdeckels derart angeordnet, dass sie zu keinem Zeitpunkt während der Entleerung des Mischgutes vom diesem überströmt werden bzw. mit Mischgut während der Entleerung in Kontakt kommen.Furthermore, the nozzles are arranged underneath, i.e. on the side of the closure cap facing away from the outlet opening, in such a way that they are never overflowed by the mixture during emptying or come into contact with the mixture during emptying.

Durch Bewegen des Verschlussdeckels relativ zur Auslassöffnung kann somit nahezu der gesamte Mischgutauslauf mit Hilfe der Reinigungsdüsen gereinigt werden.By moving the closure cover relative to the outlet opening, almost the entire mix outlet can be cleaned with the aid of the cleaning nozzles.

In einer bevorzugten Ausführungsform besitzt der Mischer einen drehbaren Mischbehälter. Durch geschickte Anordnung einer oder mehrerer Düsen kann dann auch die Innenseite der Auslassöffnung, bei geschlossenem oder fast geschlossenem Mischgutauslauf, gereinigt werden. Da die Auslassöffnung fest mit dem drehendem Behälter verbunden ist, wird durch das Ansprühen eines festen Punktes bzw. einer begrenzten Fläche im Bereich der Auslassöffnung in Verbindung mit der Drehbewegung des Mischbehälters eine nahezu vollständige Reinigung der Auslassöffnung über dem gesamten Umfang erreicht.In a preferred embodiment, the mixer has a rotatable mixing container. By cleverly arranging one or more nozzles, the inside of the outlet opening can then also be cleaned when the mix outlet is closed or almost closed. Since the Outlet opening is firmly connected to the rotating container, almost complete cleaning of the outlet opening over the entire circumference is achieved by spraying a fixed point or a limited area in the area of the outlet opening in connection with the rotary movement of the mixing container.

In einer weiteren besonders bevorzugten Ausführungsform ist vorgesehen, dass zumindest eine Reinigungsdüse in Richtung des Schwenkarms und/oder der Schwenkwelle ausgerichtet ist, um eventuell dort befindliche Mischgutreste wirkungsvoll zu entfernen.In a further particularly preferred embodiment, it is provided that at least one cleaning nozzle is aligned in the direction of the swivel arm and / or the swivel shaft in order to effectively remove any mixed material residues that may be located there.

Hinsichtlich des Verfahrens zum Reinigen eines Austrittsbereichs und/oder eines Mischgutauslaufs eines Mischers mit einer Auslassöffnung und einem relativ zur Auslassöffnung bewegbaren Verschlussdeckel sind die folgenden Schritte vorgesehen

  1. A) Anordnen mindestens einer Reinigungsdüse an dem Verschlussdeckel oder Schwenkarm,
  2. B) Zuführen von Reinigungsflüssigkeit zu der Reinigungsdüse und
  3. C) Bewegen des Verschlussdeckels relativ zu der Auslassöffnung.
With regard to the method for cleaning an outlet area and / or a mixed material outlet of a mixer with an outlet opening and a closure cover that can be moved relative to the outlet opening, the following steps are provided
  1. A) Arranging at least one cleaning nozzle on the cover or swivel arm,
  2. B) supplying cleaning liquid to the cleaning nozzle and
  3. C) moving the closure cap relative to the outlet opening.

Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung werden deutlich anhand der folgenden Beschreibung bevorzugter Ausführungsformen sowie der zugehörigen Figuren. Es zeigen:

Figur 1
eine schematische Darstellung eines Mischers des Standes der Technik,
Figur 2
eine schematische Darstellung einer ersten erfindungsgemäßen Ausführungsform mit einem Verschlussdeckel in einer geschlossenen Position,
Figur 3
eine schematische Darstellung der Ausführungsform von Figur 2 mit dem Verschlussdeckel in der geöffneten Position und
Figur 4
eine schematische Darstellung eines nicht-erfindungsgemäßen Mischers.
Further advantages, features and possible applications of the present invention will become clear on the basis of the following description of preferred embodiments and the associated figures. Show it:
Figure 1
a schematic representation of a mixer of the prior art,
Figure 2
a schematic representation of a first embodiment according to the invention with a closure cover in a closed position,
Figure 3
a schematic representation of the embodiment of FIG Figure 2 with the cover in the open position and
Figure 4
a schematic representation of a mixer not according to the invention.

Figur 1 zeigt eine schematische Darstellung eines Mischers des Standes der Technik, der oben bereits im Detail beschrieben worden ist. Figure 1 shows a schematic representation of a mixer of the prior art, which has already been described in detail above.

Figur 2 zeigt eine schematische Darstellung einer ersten Ausführungsform der Erfindung. Soweit möglich wurden die gleichen Bezugszeichen für die gleichen Elemente verwendet. Im Gegensatz zu der in Figur 1 gezeigten Ausführungsform des Standes der Technik ist die in Figur 2 dargestellte Reinigungsdüse 13 am Schwenkarm 5 befestigt. Hierzu weist der Schwenkarm 5 einen Verteiler 12 auf, an dem eine Vielzahl von Reinigungsdüsen 13 angeordnet sind. In der gezeigten Ausführungsform hat der Verteiler 12 einen kreisförmigen Querschnitt und weist an seiner umlaufenden Außenkante eine Vielzahl von durch Reinigungsdüsen 13 verschlossenen Öffnungen auf. Die Flüssigkeitszufuhr erfolgt über die Leitung 15, die sich durch die Schwenkachse 6 erstreckt. Mit der Leitung 15 kann der Verteiler 12 und damit alle an ihm angeordneten Reinigungsdüsen 13 mit Reinigungsflüssigkeit versorgt werden. Die von den Reinigungsdüsen 13 erzeugbaren Sprühstrahlen sind mit den strichpunktierten Linien beispielhaft angedeutet. Figure 2 shows a schematic representation of a first embodiment of the invention. As far as possible, the same reference numbers have been used for the same elements. In contrast to the in Figure 1 The embodiment of the prior art shown in FIG Figure 2 The cleaning nozzle 13 shown is attached to the swivel arm 5. For this purpose, the swivel arm 5 has a distributor 12 on which a plurality of cleaning nozzles 13 are arranged. In the embodiment shown, the distributor 12 has a circular cross section and has a plurality of openings closed by cleaning nozzles 13 on its circumferential outer edge. The liquid is supplied via the line 15, which extends through the pivot axis 6. With the line 15, the distributor 12 and thus all of the cleaning nozzles 13 arranged on it can also Cleaning fluid are supplied. The spray jets that can be generated by the cleaning nozzles 13 are indicated by way of example with the dash-dotted lines.

In der dargestellten Ausführungsform ist eine weitere Reinigungsdüse 14, welche über die Leitung 16, welche am Verteiler 12 angeschlossen ist, mit Reinigungsflüssigkeit versorgt wird, derart angeordnet, dass sie auf den Schwenkarm 5 bzw. die Schwenkachse 6 gerichtet ist.In the embodiment shown, a further cleaning nozzle 14, which is supplied with cleaning fluid via the line 16 which is connected to the distributor 12, is arranged in such a way that it is directed at the pivot arm 5 or the pivot axis 6.

Figur 2 zeigt die erfindungsgemäße Ausführungsform mit geschlossenem Verschlussdeckel, d.h. der Verschlussdeckel befindet sich in der geschlossenen Position. Um Mischgut aus dem Mischbehälter 2 zu entnehmen, kann der Verschlussdeckel 4 um die Schwenkachse 6 verschwenkt werden und zwischen der in Figur 2 gezeigten geschlossenen Position und in der in Figur 3 gezeigten offenen Position hin- und her bewegt werden. Durch die Hin- und Her-Bewegung wird nicht nur der Verschlussdeckel 4 von der geschlossenen Position in die geöffnete Position bewegt, sondern darüber hinaus auch die sich am Verschlussdeckel bzw. an dem Schwenkarm 5 angeordneten Reinigungsdüsen hin und her bewegt, wodurch die durch die strichpunktierten Linien angedeuteten Sprühstrahlen eine große Fläche des Mischgutauslaufs überstreichen und reinigen. Figure 2 shows the embodiment according to the invention with the closure cover closed, ie the closure cover is in the closed position. In order to remove mixed material from the mixing container 2, the closure cover 4 can be pivoted about the pivot axis 6 and between the in Figure 2 closed position shown and in the in Figure 3 open position shown can be moved back and forth. The back and forth movement not only moves the closure cover 4 from the closed position to the open position, but also moves the cleaning nozzles arranged on the closure cover or on the swivel arm 5 back and forth, whereby the Spray jets indicated by lines paint over a large area of the mix spout and clean it.

In Figur 4 ist eine Darstellung eines Mischers aufgeführt, die nicht von der Erfindung umfasst ist. Diese unterscheidet sich von der in den Figuren 2 und 3 gezeigten Ausführungsform lediglich durch eine alternative Flüssigkeitszufuhr 15'. Die Flüssigkeitszufuhr 15' verläuft bei der in Figur 4 gezeigten Ausführungsform nicht mehr durch die Schwenkachse 6, sondern ist mit einer stationären Leitung 17 mit dem Maschinenrahmen verbunden. Dies hat zur Folge, dass die Leitung 15' flexibel ausgebildet sein muss, da sich der Schwenkarm 5 relativ zu der stationären Leitung 17 bewegt. Beispielsweise kann die Leitung 15' als Schlauch ausgebildet sein.In Figure 4 is an illustration of a mixer not encompassed by the invention. This differs from that in the Figures 2 and 3 embodiment shown only by an alternative liquid supply 15 '. The liquid supply 15 'runs in the case of FIG Figure 4 The embodiment shown is no longer through the pivot axis 6, but is connected to the machine frame by a stationary line 17. This has the consequence that the line 15 ′ must be designed to be flexible, since the swivel arm 5 moves relative to the stationary line 17. For example, the line 15 'can be designed as a hose.

Allen gezeigten Ausführungsformen ist gemein, dass, um eine möglichst vollständige Reinigung des Auslaufbereichs zu erzielen, zusätzlich zu den ringförmig angeordneten Düsen 13 an dem Verteiler 12 weitere Düsen 14 eingezeichnet sind, die den Schwenkarm selbst bzw. den Raum hinter der Drehachse des Schwenkarms reinigen. Eine der weiteren Düsen ist in den Figuren nicht zu erkennen, ihr entsprechender Sprühstrahl ist jedoch ebenfalls als strichpunktierte Linie dargestellt. Diese Düse wird zur Reinigung der hinter der Schwenkachse 6 befindlichen Wand bis hoch in die obere Ecke des Mischgutauslaufs eingesetzt.All the embodiments shown have in common that, in order to achieve the most complete possible cleaning of the outlet area, in addition to the annular nozzles 13 on the distributor 12, further nozzles 14 are drawn in which clean the swivel arm itself or the space behind the axis of rotation of the swivel arm. One of the other nozzles cannot be seen in the figures, but its corresponding spray jet is also shown as a dash-dotted line. This nozzle is used to clean the wall located behind the pivot axis 6 up to the upper corner of the mix outlet.

Selbstverständlich können, wie im Stand der Technik gezeigt, im Mischgutauslauf 9 zusätzliche feststehende Düsen in der umschließenden Wandung angeordnet werden, um beispielsweise die Außenkante und Oberfläche des Verschlussdeckels 4 oder die Seiten des Schwenkarms 5 während der Schwenkbewegung zu reinigen.Of course, as shown in the prior art, additional fixed nozzles can be arranged in the surrounding wall in the mix outlet 9, for example to clean the outer edge and surface of the closure cover 4 or the sides of the pivot arm 5 during the pivoting movement.

Es versteht sich, dass die Düsen nicht unbedingt ringförmig angeordnet sein müssen, sondern beispielsweise auch auf einem halbkugelförmigen Verteiler, in mehreren Ringen, frei drehend oder in irgendeiner anderen Form verteilt angeordnet sein können. Weiterhin müssen die Düsen nicht ortsfest mit dem Schwenkarm bzw. dem Verschlussdeckel verbunden sein, sondern könnten auch auf einer zusätzlich kinematisch, um ein oder mehrere Raumachsen, bewegbaren Halterung befestigt werden. Die Düsen selbst können ein konstantes Sprühbild oder auch ein rotierendes oder pulsierendes Sprühbild erzeugen.It goes without saying that the nozzles do not necessarily have to be arranged in a ring, but can also be arranged, for example, on a hemispherical distributor, in several rings, freely rotating or distributed in any other form. Furthermore, the nozzles do not have to be fixedly connected to the swivel arm or the closure cover, but could also be fastened to a holder that is additionally kinematically movable about one or more spatial axes. The nozzles themselves can produce a constant spray pattern or a rotating or pulsating spray pattern.

Grundsätzlich könnte jede Düse oder eine Mehrzahl von Düsengruppen getrennte Flüssigkeitszuführungen aufweisen und diese könnten über eine Steuerung ein vorgegebenes Sprühmuster durch wechselndes Öffnen und Schließen der Flüssigkeitszuführungen erzielen.In principle, each nozzle or a plurality of nozzle groups could have separate liquid feeds and these could achieve a predetermined spray pattern via a control system by alternately opening and closing the liquid feeds.

Zum Reinigen des Auslaufbereiches wird zunächst der Mischer vollständig entleert. Während des Entleervorgangs ist es nicht notwendig und häufig auch nicht erwünscht, Reinigungsflüssigkeit zuzuführen. Erst nach vollständiger Entleerung des Mischers und Entfernung des Mischguts aus dem Auslaufbereich werden die Düsen angesteuert, um die Reinigung zu bewirken. Während des Reinigungszyklus kann der Verschluss mehrfach auf- und zugefahren werden oder aber auch nur über Teilbereiche mit besonders starken Verschmutzungen verschwenkt werden. Da in der Regel das Mischgut beim Entleervorgang den Auslaufbereich nicht gleichmäßig kontaktiert und verschmutzt, kann so eine zielgerichtete Reinigungswirkung erzielt werden.To clean the outlet area, the mixer is first completely emptied. During the emptying process, it is not necessary and often also undesirable to add cleaning liquid. Only after the mixer has been completely emptied and the material to be mixed has been removed from the discharge area are the nozzles activated in order to effect cleaning. During the cleaning cycle, the closure can be opened and closed several times or it can only be swiveled over partial areas with particularly heavy soiling. Since the mixed material does not come into contact evenly with the discharge area during the emptying process and does not get dirty, a targeted cleaning effect can be achieved in this way.

BezugszeichenlisteList of reference symbols

11
Mischermixer
22
MischbehälterMixing tank
33
AuslassöffnungOutlet opening
44th
VerschlussdeckelSealing cap
55
SchwenkarmSwivel arm
66th
SchwenkachseSwivel axis
77th
DrehachseAxis of rotation
88th
Lagerwarehouse
99
MischgutauslaufMix discharge
1010
ReinigungsdüsenCleaning nozzles
1111
FlüssigkeitszufuhrHydration
1212th
VerteilerDistributor
1313th
ReinigungsdüsenCleaning nozzles
1414th
ReinigungsdüseCleaning nozzle
15, 15'15, 15 '
FlüssigkeitszufuhrHydration
1616
Leitungmanagement
1717th
stationäre Leitungstationary line

Claims (6)

  1. Mixer comprising a mixing container (2) having an outlet opening (3), a closure cover (4) which can be moved back and forth between a closed position in which the closure cover (4) closes the outlet opening (3) and an open position in which the closure cover (4) uncovers the outlet opening (3) so that mixture can be removed from the mixing container (2) via the outlet opening (3), at least one cleaning nozzle for cleaning the closure opening (3) and/or a mixture outflow region (9) arranged outside of the mixing container (2), and a liquid feed (11) to feed cleaning fluid to the at least one cleaning nozzle, wherein the at least one cleaning nozzle is fastened to the closure cover (4), so that this can be moved together with the closure cover, characterised in that the closure cover (4) has a swivel arm (5) which is mounted rotatably around a swivel axis (6) so that the closure cover (4) can be swivelled around a swivel axis (6), wherein the liquid feed (11) runs through the swivel axis (6).
  2. Mixer according to claim 1, characterised in that the mixer (1) has a mixture outflow region (9) with an outflow wall which at least partially surrounds the outlet opening (3).
  3. Mixer according to one of the claims 1 to 2, characterised in that a plurality of cleaning nozzles is provided which are fastened to the closure cover (4), wherein the cleaning nozzles are preferably configured such that in operation they produce a widening spray jet pattern.
  4. Mixer according to claim 3, characterised in that the plurality of cleaning nozzles are arranged such that the cleaning nozzles together create a partially annular or annular sprayed area around the central point of the arrangement.
  5. Mixer according to claim 3 or 4, characterised in that at least one cleaning nozzle is oriented in the direction of the swivel arm (5) and/or the swivel axis (6).
  6. Mixer according to one of the claims 1 to 5, characterised in that the cleaning nozzle can be moved in a linear manner, swivelled or rotated relative to the closure cover (4).
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US10646839B2 (en) 2020-05-12
KR20190120388A (en) 2019-10-23
BR112019015939B1 (en) 2023-03-28
DK3592477T3 (en) 2021-05-31
CN110382124A (en) 2019-10-25
UA123381C2 (en) 2021-03-24
PT3592477T (en) 2021-05-21
KR102211980B1 (en) 2021-02-05
BR112019015939A2 (en) 2020-03-24
CA3051370C (en) 2020-03-10
ES2871004T3 (en) 2021-10-28
US20200023325A1 (en) 2020-01-23
ZA201906449B (en) 2021-01-27
CA3051370A1 (en) 2018-09-13
DE102017104842A1 (en) 2018-09-13
JP6810277B2 (en) 2021-01-06
PL3592477T3 (en) 2021-09-13
WO2018162348A1 (en) 2018-09-13
CN110382124B (en) 2020-09-04
JP2020509932A (en) 2020-04-02
RU2709086C1 (en) 2019-12-13
EP3592477A1 (en) 2020-01-15

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